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Agent Dev Tools – JSON Validate & Format
x402
Agent Dev Tools – JSON Validate & Format is a paid API for AI agents from agent-dev-tools.frcompanycheck.workers.dev, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-12).
Validates a JSON string and returns its type, structural stats, pretty-printed form, and minified form
Price / call$0.002
Success—
StatusUnknown
How this service works
Fast deterministic developer utilities for AI agents, paid per call in USDC via x402 (no account, no API key): UUID v4/v7, secure random numbers, dice, MD5/SHA/HMAC hashing, base64/hex/URL/HTML encoding, JSON validation/formatting, QR code SVG, password generation, JWT decoding and text statistics. Pure computation, nothing stored. Errors are never charged.
Output
Returns a JSON object with: `valid` (boolean), `type` (JSON root type like 'object' or 'array'), `stats` (node count, max depth, object key count), `pretty` (indented string), and `minified` (compact string). If invalid, returns an error description without charging.
Example use cases
Validate API response payload
“I just got this JSON back from an external API and I'm not sure it's well-formed — can you validate it and tell me how deeply nested it is? Here it is: '{"user":{"id":42,"roles":["admin","editor"]}}'”
Minify JSON for storage
“Take this pretty-printed JSON config and give me the minified version so I can store it compactly: '{\n "host": "localhost",\n "port": 5432,\n "ssl": true\n}'”
Debug malformed JSON in pipeline
“My data pipeline is throwing a JSON parse error — can you check whether this string is valid JSON and show me the pretty version so I can spot the problem? String: '{"items":[1,2,3,"status":"ok"}'”
Technical details
Endpoint
POSThttps://agent-dev-tools.frcompanycheck.workers.dev/v1/json/validate?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need fast, stateless JSON validation or formatting without setting up an account or API key — especially inside an AI agent pipeline that already handles x402 micropayments. Ideal for one-off checks, CI tooling, or agent workflows where JSON correctness needs to be verified before downstream processing.
Side effects
- Invalid or unparseable JSON input returns a validation error with no charge
- Missing required `json` field returns a 400-level error
- Indent value outside 0–8 range may be rejected or clamped
- Extremely large JSON strings may time out or exceed worker limits
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| json | string | The JSON text to validate (a string) |
| indent | integer | Pretty-print indent 0-8 (default 2) |
Output
Schema · Response
{
"type": "json",
"example": {
"type": "object",
"stats": {
"nodes": 6,
"max_depth": 2,
"object_keys": 2
},
"valid": true,
"pretty": "{\n \"a\": 1 ...",
"minified": "{\"a\":1,\"b\":[1,2,3]}"
}
}Tags
x402
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